Extremely perplexed with my Gray Tree frogs

[charlamanda]

Update. Finally the three tiny frogs are having a amazing growth spurt. Baby has more than doubled his size in about a week...I can't beleive it and don't understand it. I just don't get it for the longest time they just weren't growing at all, but all of a sudden...they are now growing really fast. They are also eating a lot of crickets. I fill a cricket bowl, I leave in their tank, every other day with about 20+ tiny crickets, by the next day there are maybe 2-5 left. When I fill the cricket bowl up I also drop in a few hundred fruit flies too.
Here's a pic of Baby a couple of days a go.